[RndTbl] Shaw blocking port 25 on business line

Gerald Brandt gbr at majentis.com
Tue Feb 4 20:27:16 CST 2020

So, port 25 opened for a few days. Shut down again today with no reason why.

Talked to business support, and they suggested that perhaps someone 
discontinued receiving our newsletter.

What the hell that has to do with SMTP out not connecting to any 
servers, I have no idea. That as stupid as saying since gmail can send 
to gmail, port 25 is open.


On 2020-01-21 12:25 p.m., Gerald Brandt wrote:
> Hi,
> I've been fighting with Shaw for days on this. I have what they call a 
> business account with 8 static IPs.
> I can telnet mail.shaw.ca 25 and get a connection. So, inside their 
> network, SMTP works.
> If I try to telnet to any other server on port 25, i get no 
> connection. e.g. telnet to google email servers fails, telnet to my 
> server in Montreal fails.).
> To test that port 25 was open, they had me start Firefox, login to 
> gmail, and send an email from my gmail to my gmail account. that was 
> proof they weren't blocking port 25... Yeah.
> Right now, in order to get email out, i am using mail.shaw.ca as a 
> relay. That is not supported, so they are asking me to not do that. I 
> told them if I don't use them as a replay, i can't get email out. They 
> did not understand.
> Does anyone have any idea how to get these guys to understand what is 
> going on? Am i using the wrong terminology? I can't see how I can make 
> it any clearer to them that they are blocking port 25 access to any 
> system outside of their network.
> Gerald
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